In a bowl, beat the heavy cream, mascarpone and sugar for 3-5 minutes until smooth, creamy, and thick.
Pour about ¾ cup (200 ml) of chocolate milk into a shallow dish. Dip about 10-12 speculaas cookies in the milk for a few seconds - don’t let them get too soggy, or they’ll fall apart.
Arrange the cookies in a rectangular dish in a single layer to cover the bottom. Spread half of the mascarpone mixture over the top.
Warm the cookie butter briefly in the microwave until spreadable (but not hot). Spread it evenly over the mascarpone layer.
Repeat the layering with another 10-12 cookies and the remaining mascarpone mixture. For the best flavor, refrigerate the tiramisu overnight to set (You can also serve it immediately if you prefer).
Before serving, dust with cocoa powder and decorate with extra cookies, one half cookie per slice works great. Slice into 10-12 servings and enjoy!
Tips
You can also layer this tiramisu in small glasses or individual dishes.
Decorate with speculoos cookies, speculaas chunks, or mini gingerbread cookies.
Add some Biscoff spread to the mascarpone cream for a delicious taste.
How to store
This tiramisu keeps well in the fridge for up to 4 days.